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Inductive Heat Tool for Rusty Bolts - MUST HAVE

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Ray Cecil

Inductive Heat Tool for Rusty Bolts - MUST HAVE

1988 F250 Supercab Longbed 7.3 IDI, C6, 1356, GEARVENDORS, 4.10 Sterling with autolocker

1986 F150 302, C6, 9" 2.75, Wood Flatbed

Gary Lewis

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

Administrator

I LIKE IT! But, at $500 from Amazon I think I'll use my MAPP gas torch.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

Ray Cecil

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

I hear ya. If money were no thing, I'd have to build a garage 5x as big as the one I am now to fit all my tools and cars.....

1988 F250 Supercab Longbed 7.3 IDI, C6, 1356, GEARVENDORS, 4.10 Sterling with autolocker

1986 F150 302, C6, 9" 2.75, Wood Flatbed

Gary Lewis

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

Administrator

Well, so much for the MAPP gas idea. I had this lower plenum with a twisted off thermostat housing bolt, so thought, in light of the above discussion, that I'd prove that I could get it out easily. Here's the twisted-off bolt before my attempts:

And, after a round of MAPP gas and Vise Grips well and truly applied the only difference was that the paint was gone.

So, out came the welder and I welded the nut to the stump of the bolt. Lots of penetration and heat, and the nut glowed red for quite a while when I was done. And it looked like this:

After it cooled and I'd flooded it with penetrating oil and coaxed it with lots of tapping, I gently started tapping on a wrench with my hand. Pretty soon I started getting movement and thought I was "there", only to learn that the stump was now 1 turn shorter.

So I did it again, this time ensuring that the weld was as hot as I could make it to both get as much penetration as thermal shock on the threads. And, now I have two nuts with about 1 turn of the bolt in them:

So, now there's only enough thread showing to fill a nut, and I have Loctite Red in there and will let it sit overnight before seeing if that will work.

Gary, AKA "Gary fellow": Profile

NotEnoughTrucks

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

Did that weld a nut on trick on a broken water pump bolt on a 351W a few weeks back. Works well.

I have a couple of induction cooktops that I use in the motorhome. Pretty simple principle and I wonder how difficult it would be to DIY something like this? Basically, a moving magnetic field and ferrous metals develop eddy currents which become heat.

Intriguing!

https://www.youtube.com/watch?v=Py0p165dnsA

Gary Lewis

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

Administrator

What about running serious current through the bolt via an arc welder?

Gary, AKA "Gary fellow": Profile

NotEnoughTrucks

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

Heard of thawing frozen metallic pipes that way.

Gary Lewis

Re: Inductive Heat Tool for Rusty Bolts - MUST HAVE

Administrator

Yep, me too. Don't know how to do it easily with a MIG, but would be a piece of cake with a stick welder.

Gary, AKA "Gary fellow": Profile